Safety locking device for hatch-doors.



H. D. WILLIAMS.

SAFETY LOCKING DEVICE FOR HATCH DOORS.

APPLICATION FILED MAY 23.19I6.

,QQE Patented Nov. 7, 1916.

2 SHEETS-SHEET I.

"mum l K @-Wms n H. n. WILLIAMS.

SAFETY LOCKING DEVICE FOR HATCH DOORS.

' APPLICATION FILED MAY 23 |916.

1,204,221 Patented' Nov. 7,

I 2 SHEETS-SINE "'Iil' 'I IH rrrc- SAFETY LOCKING DEVICE FOB.HATCH-DOORS.

Specication of Letters Patent.

Patented Nov. '7, 1916.

Application i1ed May 23, 1916. Serial No. 99,462.

To all whom t may concern Be it known that I, HENRY D. 'WILLIAMs,

a citizen of the United States, residing at New York, in the county ofNew York and State of New York, have invented certain new and usefulImprovements in Safety Locking Devices for Hatch-Doors; and I do herebydeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled ih the art to which itappertains to make Aand use the same, reference being had to theaccompanying drawings, and to the letters and figures ofreference markedthereon, which form a part of this specification.

This invention relates to new and useful improvements in safety devicesfor preventing accidents in hatches in connection with firerooms ontorpedo boats. f

In the fire rooms on torpedo boats, which are under forced air draftused for' different purposes, in which the air is forced into the reroom by suitable blowers, the air going from re rooms through airshutters into the fire box and up the stack, regulated according to thesmoke, 'it is necessary, when the blowers are in operation, that, in theevent of a person going through the bottom door, the upper hatch door beclosed against being opened, otherwise serious injury might befall theperson passing through the lower hatch door, which, in the event of bothdoors being opened at the same time, will cause the lower door to beblown closed -with terrilic force.

The present invention consists of an au.- tomatic means whereby, whenthe lower door is released, the upper door is held in a locked relation.

My invention consists of various details.

the latch released and the door opened. Fig. 3 is a sectional view-online 3-3 of Fig. 2.

Reference 'now being had to the details of the drawings-by numeral 1designates a hatch compartment with an opening 2 therein and in eachcompartment is positioned a ladder 2.

3 designates a door, hinged at 6, to said opening and provided with asight aperture 4. The outside of the door is provided with a handle 5for convenience in opening and closing thesame. Locking pawls 7 and 8are mounted, the former upon a pivot 9 and the-latter is pivotallymounted upon the pin 10, and 11 designates a bar to which the twolockingv pawls are pivoted, said bar being provided with a handle 12.The bar extends up through an aperture in the deck and is pivotallyconnected at 14 with a link 15 which in turn is pivotally connectedthrough the medium of a pin 16 with a movable pin locking member 17which isv -to the under surface of the cover by the straps 25. The twobolts 22 have pivotal connection through the medium of the pins 26 withcorresponding ends of the angle levers 27 which are pivotally mountedupon. the pins 28 and the long arms of the angle levers 27 are pivotallyconnected throughL the medium of the pin 29 with the shank portion ofthe bolt 23 to which la handle 30 is connected by means of the links 31,shown in Fig. 1 of the drawings. A coiled spring 32 is interposedbetween a'strap'33 upon the under surface of the cover and a collar 34and its purpose is to hold the various bolts normally in locked relationor in the positions shown in Fig. 1 of the drawings.

It will be noted upon reference to Figs. 2 and 3 of the drawings thatthe inner surface of the upwardly projecting portion of the hatchcompartment has notches, designated vby numerals 35, which are adaptedto be engaged by bolts. A pin 37 is mounted in an aperture in the wallof the hatch chamber and in alinement with the bolt 23 and serves as ameans whereby, when pushed inward against the bolt 23, may cause thelatter to disengage its notch in the wall of the hatch chamber and atthe same time cause the other bolts to be withdrawn, thus allowing thehatch door to swing open. When the member 17 is in the position shown insolid lines in Fig. 2, the L-shaped endv of said member will bepositioned over the pin so that it will be impossible to, release the.bolts when the door is locked closed and which will be the position whenthe lower door 3 is opened, I Y

From4 the foregoing,y it will be noted that, when the'locking pawls 7and 8 are in released positions, allowing the lower door to be. opened,access maybe had to the interior of the hatch cham-ber without; anypossibility of the top hatch door being opened from the outside, thusavoiding any possibility of serious injury incident tol Vboth doo-rs,being opened at the same time.

What 1; claim to be new is 2,--V Y 1. A safety device. for doors uponhatch chambers upon torpedo boats, etc., comprising, in combinationwith-a hatch chamber with la lower door andy a door in the top thereof,movable locking pawls mounted upon the wall of the chamber andy adaptedtolocl; said lower door closed, locking bolts uponl the upper door,means fori releasing said bolts,A andz mechanism actuated by saidlocking pawls for preventing the bolts from c being released when` thepawls are in unlocked positions.

2. Av safety device for doors upon hatch chambersupon torpedo boats,etc., comprising, in combination with a hatch chamber with al lower doorand a door in the top thereof, movable locking pawls. mounted upon Vthewall ofthe chamber-and adapted to lock said lower door closed, lockingbolts upon the upper; d0or,`means for releasing said bolts,` a barpivotedl to the locking pawls,`and meansactuated thereby for pre-`venting, the bolt releasing mechanism from beingi operated; whenthepawls are in unlocked.` positions.

3. A safety device for doors upon hatch chambers upon-*torpedo boats,etc., comprising, in combination with7 a hatch. chamber with alower-door and a door in the: top thereof, movable locking-'pawlsmounted upon the wall of the-chamber and adapted to lock said lower doorclosed, spring` pressed locking bolts upon the coverhavingpivotalconnection with one anotherand adapted. toy engage notchesin the wall of the hatch chamber, meansupon the latter for :releasingthe bolts, and meansfactuated by the pawls for preventing said releasingmechamsmibeing actuated when the pawls are 1n unlocked position.

et. A safety device for doors upon hatch in unlocked positions, to: bepositioned in v the path of said releasing member to: preventfthe sameVbeingv operatedtoy release the 5. A safety device for doors upon hatchchambers: upon torpedov boats, etc., comprising7 in combination with ahatch chamber with a lower door and a door in the top thereof,- movablelocking lpawls mountedf upon the wall of the chamber and adapted to locksaid' lower door closed, springpressedI lockingfbolts` upon the coverhaving pivotal connection with one another and; adapted to engagenotches. in the wall of the: hatch chamber, means upon the latter forreleasing the bolts, a member having an L-shaped end which isislotted;to receive said; member, and pivotal connectionsbetween` said: memberand? locking' pawls,

6.` A safety device for doors Yupon hatch chambersupon tor-.pedo boats,etc., compris-- ing, in combinationy with a hatch chamber with a lower.door and" adoor in the top Y thereof, movable lock-ing pawls mountedupon the wall ofthe chamberf andadapted toy lock' said; lower doorclosed', spring-'- pressed lockingx boltsA upon the cover vhavingypivotal connection'y with one another and adapted to engage notches inthe wally of the hatch chamber, means upon the: latter for releasing thebolts, amember having an L-shaped endf which-isslotted tof-receivesaidzreleasing member, a bar. pivotally con-- necting the locking pawls,and pivotal linkVVV Y 'releasing pin mounted in an aperture in Intestimony whereof` I hereunto affix the wall of the chamber and inalinement my signature in presence of two Witnesses.

with one of said bolts, a slotted L-shaped HENRY DUKE WILLIAMS. memberthrough which said releasing pin Witnesses:

5 passes, and connections between said slotted ARTHUR II. SHARPE,

member and locking pawls. HARRY J. JONES.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

